EP2137003B1 - Suspensions à bras principal et oscillant avec des bras en forme de z - Google Patents
Suspensions à bras principal et oscillant avec des bras en forme de z Download PDFInfo
- Publication number
- EP2137003B1 EP2137003B1 EP08732894A EP08732894A EP2137003B1 EP 2137003 B1 EP2137003 B1 EP 2137003B1 EP 08732894 A EP08732894 A EP 08732894A EP 08732894 A EP08732894 A EP 08732894A EP 2137003 B1 EP2137003 B1 EP 2137003B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- axle
- arm
- vehicle
- bracket
- attachment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Not-in-force
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G7/00—Pivoted suspension arms; Accessories thereof
- B60G7/02—Attaching arms to sprung part of vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G9/00—Resilient suspensions of a rigid axle or axle housing for two or more wheels
- B60G9/003—Resilient suspensions of a rigid axle or axle housing for two or more wheels the axle being rigidly connected to a trailing guiding device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
- B60B35/02—Dead axles, i.e. not transmitting torque
- B60B35/10—Dead axles, i.e. not transmitting torque adjustable for varying track
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
- B60G11/26—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs
- B60G11/28—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs characterised by means specially adapted for attaching the spring to axle or sprung part of the vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G7/00—Pivoted suspension arms; Accessories thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G7/00—Pivoted suspension arms; Accessories thereof
- B60G7/001—Suspension arms, e.g. constructional features
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2200/00—Indexing codes relating to suspension types
- B60G2200/30—Rigid axle suspensions
- B60G2200/31—Rigid axle suspensions with two trailing arms rigidly connected to the axle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/10—Mounting of suspension elements
- B60G2204/12—Mounting of springs or dampers
- B60G2204/126—Mounting of pneumatic springs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/10—Mounting of suspension elements
- B60G2204/12—Mounting of springs or dampers
- B60G2204/129—Damper mount on wheel suspension or knuckle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/10—Mounting of suspension elements
- B60G2204/14—Mounting of suspension arms
- B60G2204/148—Mounting of suspension arms on the unsprung part of the vehicle, e.g. wheel knuckle or rigid axle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
- B60G2204/43—Fittings, brackets or knuckles
- B60G2204/4306—Bracket or knuckle for rigid axles, e.g. for clamping
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
- B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
- B60G2206/10—Constructional features of arms
- B60G2206/11—Constructional features of arms the arm being a radius or track or torque or steering rod or stabiliser end link
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
- B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
- B60G2206/70—Materials used in suspensions
- B60G2206/72—Steel
- B60G2206/722—Plates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
- B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
- B60G2206/80—Manufacturing procedures
- B60G2206/81—Shaping
- B60G2206/8103—Shaping by folding or bending
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
- B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
- B60G2206/80—Manufacturing procedures
- B60G2206/82—Joining
- B60G2206/8207—Joining by screwing
Definitions
- the present invention is generally directed to leading arm and trailing arm vehicle suspension system types. More specifically, the present invention is directed to suspension systems having a longitudinally extending arm connecting a fabricated hollow vehicle axle to a vehicle frame hanger.
- Leading and trailing arm vehicle suspension systems are known. Such suspensions typically have a longitudinally extending arm that is pivotally connected at a proximal end to a vehicle frame hanger and generally rigidly connected at a distal end to a vehicle axle, typically through an axle seat or other intermediate suspension component.
- the arm typically provides a bending stiffness to control axle windup and longitudinal stiffness to control axle position.
- the term arm shall be construed to exhibit the characteristics expressed within this paragraph.
- Leading arm vehicle suspension systems are those types of suspensions wherein the vehicle axle is positioned forward of the frame hanger.
- Trailing arm vehicle suspension systems are those types of suspensions wherein the vehicle axle is positioned rearward of the frame hanger.
- Leading arm vehicle suspension systems are illustrated in this patent application, for purposes of providing a frame of reference with regard to the direction and for purposes of uniformity. However, those skilled in the art will understand that the principles of the present invention are applicable to trailing arm vehicle suspension systems, as well. Therefore, for each example, each description of a leading arm vehicle suspension system shall be considered to be a description of and shall also apply to a trailing arm vehicle suspension system exhibiting similar structural and functional characteristics.
- One advantage achieved by the present invention is the use of a leading or trailing arm in a leading or trailing arm suspension system wherein the arm assembly includes an axle bracket attached to a tubular vehicle axle by, for example a durable through-bolt connection, and having a vertical plane permitting attachment thereto of a suspension component such as a trailing arm or leading arm of the type used in trailing arm suspension systems and leading arm suspension systems, respectively.
- Another advantage achieved by the present invention is the use of such an axle bracket having a transverse torque rod attachment included in the axle bracket casting.
- Another advantage achieved by the present invention is the use of such an axle bracket having shock attachment locations included in the axle bracket casting.
- Another advantage achieved by the present invention is the use of such an axle bracket having rack and pinion attachment locations included in the axle bracket casting.
- Another advantage achieved by the present invention is the use of such an axle bracket having air spring attachment locations included in the axle bracket casting.
- Another advantage achieved by the present invention is the use of such an axle bracket having caster wedge attachment locations included in the axle bracket casting and further having slotted caster adjustment holes and a rounded pivot hole to permit assembly without a fixture.
- a still further advantage achieved by the present invention is the use of an arm assembly with an arm having a Z-shaped cross-section fastened to the axle bracket along its vertical plane and thereby providing an efficient load transfer from the arm to the axle bracket casting to avoid or substantially reduce the development of stress risers around the fasteners used for such fastening and to produce optimal stress distribution.
- Another advantage achieved by the present invention is use of such a z-shaped arm having its shear center in line with the attachment of the arm to the axle bracket casting thereby avoiding twisting and associated torsion in the part.
- Another advantage achieved by the present invention is use of such a z-shaped arm with top and bottom flanges efficiently tapered to optimize the section for weight and to enhance compliance so the arm is not overly stiff during suspension roll.
- Another advantage achieved by the present invention is use of voided bushings with such a z-shaped arm to further control roll stiffness within a predetermined favorable range.
- Another advantage achieved by the present invention is the use of such a z-shaped arm having a transverse torque rod bracket connected thereto.
- Another advantage achieved by the present invention is the use of such a z-shaped arm having rack and pinion attachment locations included in the beam.
- Another advantage achieved by the present invention is the use of such a z-shaped arm having a stamped configuration to achieve ease of manufacture and to accommodate packaging limitations.
- Another advantage achieved by the present invention is use of such an arm assembly to reduce suspension system weight, part count, assembly time and assembly complexity.
- Another advantage achieved by the present invention is the use of such an arm assembly to reduce failure modes and improve product integrity.
- Another advantage achieved by the present invention is the ability to tune roll stiffness of the suspension by optimizing the compliance of the arm and the bushings used to connect the beam to its associated vehicle frame hanger.
- the present invention is directed to a trailing or leading arm vehicle suspension system.
- a vehicle axle extends laterally across a vehicle centerline.
- the vehicle axle has a hollow section.
- An axle bracket is attached to the vehicle axle, and in turn, an arm is attached to the axle bracket and extends generally longitudinally and transverse to the direction of the vehicle axle.
- the axle bracket is fit onto the axle and wraps partially around the axle.
- the axle bracket has a vertical mounting plane surface that permits the arm to mount thereto.
- FIG. 1 is a rear perspective view of a leading arm suspension system constructed in accordance with the principles of the present invention
- FIG. 2 is a front perspective view of the suspension system shown in FIG. 1 ;
- FIG. 3 is an exploded rear perspective view of certain components of the suspension system shown in FIG. 1 ;
- FIG. 4 is a front perspective view of certain components of another leading arm suspension system constructed in accordance with the principles of the present invention.
- FIG. 5 is an exploded rear perspective view of the suspension system components shown in FIG. 4 ;
- FIG. 6 is a front perspective view of certain components of a leading arm suspension system constructed in accordance with the principles of the present invention.
- FIG. 7 is a rear perspective view of the suspension system components shown in FIG. 6 ;
- FIG. 8 is a rear perspective view of a component that may be used in a suspension system designed in accordance with the principles of the present invention.
- FIG. 9 is a perspective view of a portion of a suspension system using the component shown in FIG. 8 ;
- FIG. 10 is a perspective view of a component that may be used in a suspension system designed in accordance with the principles of the present invention.
- FIG. 11 is a perspective view of a similar component as that shown in FIG. 10 , with modifications;
- FIG. 12 is a perspective view of a portion of the leading arm suspension system components shown in FIGS. 6 and 7 ;
- FIG. 13 is a sectional perspective view of the portion of the suspension system shown in FIG. 12 ;
- FIG. 14 is another sectional perspective view of the portion of the suspension system shown in FIG. 12 ;
- FIG. 15 is a perspective view of the assembly of the suspension system components shown in FIG. 12 ;
- FIG. 16 is a perspective view of certain components that may be used with suspension systems constructed in accordance with the principles of the present invention.
- FIG. 17 is a perspective view of other certain components that may be used with suspension systems constructed in accordance with the principles of the present invention.
- FIG. 18 is a perspective view of another component that may be used with suspension systems constructed in accordance with the principles of the present invention.
- FIG. 19 is a perspective view of preferred aspects of a component shown in FIGS. 6 and 7 ;
- FIG. 20 is a partial perspective view of the component shown in FIG. 19 ;
- FIG. 21 is a perspective view of an assembly of certain components that may be used with suspension systems constructed in accordance with the principles of the present invention.
- FIG. 22 is another perspective view of assembly of certain components shown in FIG. 21 .
- FIGS. 1-3 illustrate certain vehicle components for a vehicle having a leading arm type suspension 30.
- a fabricated vehicle axle 32 is shown as extending generally laterally across the vehicle centerline from one side to the other. Attached on opposite ends of fabricated vehicle axle 32 is a pair of cooperating steering knuckles 34. Steering knuckles 34 are pivotally attached to the respective gooseneck ends 35 of fabricated vehicle axle 32 by king pins (not shown) in known manner.
- the details of fabricated vehicle axle 32 and steering knuckles 34 are available to and known by those skilled in the art, and it is unnecessary to recite such details herein.
- U.S. Patent No. 6,609,764 Dudding et al.
- U.S. Patent No. 6,616,156 Dudding et al.
- the fabricated vehicle axle 32 has a box section to provide high roll stability.
- FIGS. 1-3 also illustrate two leading arm assemblies 36, each of which includes an axle bracket 38 fit onto and bolted through fabricated vehicle axle 32.
- Axle brackets 38 are preferably either aluminum or ductile iron castings and are fully integrated structures that glove over the fabricated vehicle axle 32. This construction is very efficient with regard to cost and weight, as well as ease of manufacture.
- a through-bolt connection may be used to attach each axle bracket 38 with fabricated vehicle axle 32 and is described below with reference to other figures of the drawing.
- Each axle bracket 38 includes an air spring mounting pad 40 and a shock attachment 42. Each axle bracket 38 has a shock absorber 44 attached thereto, as shown. Moreover, each axle bracket 38 includes a vertically oriented arm attachment surface 46 that, in cross-section, generally extends in the z-axis relative to the longitudinal and lateral axes of the vehicle.
- Each leading arm assembly 36 also includes a leading arm 48 having a generally z-shaped cross-section.
- each z-shaped arm 48 has a top laterally extending surface 50, a bottom laterally extending surface 52, and a vertically extending mounting surface 54 joining the top and bottom laterally extending surfaces.
- Each z-shaped arm 48 is attached to its associated axle bracket 38 by fastening the vertically oriented arm attachment surface 46 of the axle bracket with the vertically extending mounting surface 54 of the z-shaped arm.
- bores on each of vertical surfaces 46, 54 are brought into axial alignment with each other and bolts or other fasteners are used to attach the axle bracket 38 and the z-shaped arm 48.
- This configuration provides an efficient load transfer from the arm 48 to the axle bracket casting 38 to avoid or substantially reduce the development of stress risers around the fasteners used for such fastening and to produce optimal stress distribution.
- the use of the z-shaped arm 48 having its shear center in line with the vertically extending mounting surface 54 of the arm and the vertically oriented arm attachment surface 46 of the axle bracket 38 avoids twisting and associated torsion in the part.
- the top and bottom laterally extending surfaces 50, 52 of the z-shaped arm 48 may be efficiently tapered to optimize the section for weight and to enhance compliance so the arm is not overly stiff during suspension roll. Additionally, the open z-shaped section provides torsional compliance so that the arm 48 is not overstressed during suspension roll or cross-articulation.
- the bottom laterally extending surface 52 of each z-shaped arm 48 is positioned generally inboard with respect to the top laterally extending surface 50 for that arm.
- Each arm 48 includes a bushing receiving bore or outer canister 56 at its proximal end for receiving a bushing and connecting the beam to a vehicle frame hanger (not shown). Each vehicle frame hanger is attached to a respective one of the longitudinally extending vehicle frame rails 58. Each arm 48 extends longitudinally forward in the leading configuration from the vehicle frame hanger to and beyond the fabricated vehicle axle 32 and is attached to its associated axle bracket 38 in the manner described above.
- Each z-shaped arm 48 also includes an air spring mounting pad surface 60 that is complementarily shaped with the air spring mounting pad 60 of its associated axle bracket 38. An air spring 62 is mounted atop the air spring mounting pad surface 60 of each z-shaped arm 48, as illustrated in FIG. 3 .
- each arm 48 As each arm 48 extends, its width steadily decreases from a maximum width at or about the termination of its air spring mounting pad surface region 60 to a minimum width at the bushing outer canister 56.
- the outermost longitudinally extending edges for each of the top and bottom surfaces 50, 52 are tapered.
- Arms 48 provide a bending stiffness to control axle windup and longitudinal stiffness to control axle position.
- Each arm assembly 36 also includes a rack and pinion mounting bracket 63.
- Each such bracket 63 is fastened to the vertically extending mounting surface 54 of the arm 48, as shown.
- the rack and pinion mounting brackets 63 extend inboard and under the bottom surfaces 52 of the z-shaped arms 48. Referring to FIG. 4 , a rack and pinion steering system 64 may then be mounted to mounting brackets 63 with appropriate fasteners.
- Transverse torque rod mounting bracket 66 is also attached to the vertically extending mounting surface 54 of its associated arm 48; however, it is attached on the inboard side thereof and above the bottom extending surface 52 for that arm. When attached to the arm 48, the mounting bracket 66 is designed to receive and permit mounting of a transverse torque rod (not shown) by appropriate means.
- FIGS. 4 and 5 illustrate another leading arm suspension system 130.
- the vehicle includes a fabricated vehicle axle 32 and steering knuckles 34 of the types already described.
- Two arm assemblies 136 are also shown.
- Each arm assembly 136 includes an axle bracket 138 preferably made from an aluminum or ductile iron casting.
- Each axle bracket 138 is fit onto the fabricated vehicle axle 32 and attached thereto by a through-bolt connection as described later in this specification.
- Each axle bracket 138 includes an integrated air spring mounting pad 140, an integrated shock attachment 142 and an integrated rack and pinion attachment 143.
- Axle bracket 138 of this embodiment differs from axle bracket 38 of the embodiment illustrated in FIGS. 1-3 insofar as axle bracket 138 includes the integrated rack and pinion attachment 143.
- a rack and pinion steering system 64 is attached to the axle brackets 138, as shown in FIG. 4 , by the use of appropriate fasteners.
- Air springs and shock absorbers are not shown in FIGS. 4 and 5 ; however, it will be appreciated that they are also attached to axle brackets 138 in a manner consistent with their attachment shown in the embodiment illustrated by FIGS. 1-3 . It will be appreciated that while axle brackets 138 illustrated in this embodiment are different in configuration, they could be identical in other embodiments of the present invention.
- a z-shaped arm 148 is included as part of each arm assembly 136.
- Z-shaped arms 148 have similar shapes and designs as the z-shaped arms 48 described in the prior embodiment.
- the two z-shaped arms 148 each have a generally z-shaped cross-section.
- Each z-shaped arm 148 has a top laterally extending surface 150, a bottom laterally extending surface 152, and a vertically extending mounting surface 154 joining the top and bottom laterally extending surfaces.
- Each z-shaped arm 148 is attached to its associated axle bracket 138 by fastening the vertically oriented arm attachment surface 146 of the axle bracket with the vertically extending mounting surface 154 of the z-shaped arm. Bores on each of vertical surfaces 146, 154 are brought into axial alignment with each other and bolts or other fasteners are used to attach the axle bracket 138 and the z-shaped arm 148. With this assembly, the corresponding described benefits are achieved.
- Each arm 148 includes a bushing receiving bore or outer canister 156 at its proximal end for receiving a bushing 157 and connecting the arm to a vehicle frame hanger (not shown) and ultimately the longitudinally extending vehicle frame rails.
- the width thereof generally increases from a minimum width at the bushing outer canister 156 to a maximum width closer to the distal end.
- the top and bottom surfaces 150, 152 for each arm 148 are tapered, as desired, and optimized for preferred stiffness of the structure. Again, a variety of z-shaped arm dimensions may be used, as desired, to tailor the arm to the specific application of use.
- the right hand arm 148 includes a transverse torque rod mounting bracket 166.
- the bracket 166 is preferably a casting and is attached to the vertically extending mounting surface 154 of its associated arm 148, on the inboard side thereof and above the bottom extending surface 152 for that arm. When attached to the arm 148, the mounting bracket 166 is designed to receive and permit mounting of a transverse torque rod (not shown) by appropriate means.
- Caster wedges 168 are positioned between the axle brackets 138 and the arms 148 on each side of the suspension 130.
- the wedges 168 are sandwiched and retained between the axle brackets 138 and the arms 148.
- the desired caster angle for the suspension 130 may be set without requiring use of an assembly fixture (see FIG. 13 ).
- FIGS. 6 and 7 illustrate yet another leading arm suspension system 230.
- the vehicle includes a fabricated vehicle axle 32 and steering knuckles 34 of the types already described. Again, two arm assemblies 236 are also present.
- Each arm assembly 236 includes an axle bracket 238 preferably made from an aluminum casting.
- Each axle bracket 238 is fit onto the fabricated vehicle axle 32 and attached thereto by a through-bolt connection.
- Each axle bracket 238 includes an integrated air spring mounting pad 240, an integrated shock attachment 242 and an integrated rack and pinion attachment 243.
- a rack and pinion steering system (not shown) is attached to the axle brackets 238 by fasteners.
- An air spring and a shock absorber are also attached to each of the axle brackets 238.
- the axle brackets 238 in this embodiment are different in configuration, but they could be identical.
- a z-shaped arm 248 is included as part of each arm assembly 236.
- Z-shaped arms 248 have a similar z-shaped cross-section, producing the same benefits earlier described.
- each z-shaped arm 248 has a top laterally extending surface 250, a bottom laterally extending surface 252, and a vertically extending mounting surface 254 joining the top and bottom laterally extending surfaces.
- the top and bottom laterally extending surfaces 250, 252 are tapered and slightly curved towards the horizontal center of the z-shaped cross-section to produce optimal stress properties.
- Each z-shaped arm 248 is attached to its associated axle bracket 238 by fastening the vertically oriented arm attachment surface 246 of the axle bracket (see FIG. 13 ) with the vertically extending mounting surface 254 of the z-shaped arm. Bores on each of vertical surfaces 246, 254 are brought into axial alignment with each other and bolts or other fasteners are used to attach the axle bracket 238 and the z-shaped arm 248.
- Each arm 248 includes a bushing receiving bore or outer canister 256 at its proximal end for receiving a bushing 257 and connecting the beam 248 to a vehicle frame hanger (not shown) and ultimately the longitudinally extending vehicle frame rails.
- a bushing receiving bore or outer canister 256 at its proximal end for receiving a bushing 257 and connecting the beam 248 to a vehicle frame hanger (not shown) and ultimately the longitudinally extending vehicle frame rails.
- its width generally increases from a minimum width at the bushing outer canister 256 to a maximum width closer to the distal end and at the attachment for the rack and pinion mounting region 243 for the axle bracket 238, where caster wedges 268 are used to set a fixed, desired caster angle for the suspension 230 and permit assembly without use of a fixture.
- a variety of z-shaped arm dimensions may be used, as desired, to tailor the arm to the specific application of use.
- the right hand arm 248 includes a transverse torque rod mounting bracket 266 fastened thereto.
- the bracket 266 is preferably a casting and is attached to the vertically extending mounting plane 254 and the bottom laterally extending surface 252 of its associated arm 248 on the inboard side the arm assembly.
- a mounting plate 267 permits attachment to the vertically extending mounting plane 254 of the arm 248 (see also FIG 12 ).
- Some of the same fasteners used to attach the arm 248 with the axle bracket 238 may be used to attach the transverse torque rod mounting bracket 266 to the vertically extending mounting plane 254 of the arm.
- the mounting bracket 266 is designed to receive and permit mounting of a transverse torque rod (not shown) by appropriate means.
- FIGS. 8 and 9 illustrate a transverse torque rod mounting bracket 366 shown in the form of an iron casting.
- the bracket 366 includes two mounting ears 370 having mounting bores 371 and is mounted to the inboard side of the vertically extending mounting flange 254 of the z-shaped arm 248 which in turn is mounted to the vertically oriented arm attachment plane 246 of the axle bracket 238.
- the bracket 366 also includes a torque rod attachment portion 372 for permitting attachment of a transverse torque rod (not shown).
- FIG. 10 illustrates an axle bracket 374 shown in the form of an aluminum or ductile iron casting.
- the axle bracket 374 includes and axle through-bolt portion 376 designed to fit onto and permit a through-bolt connection with the vehicle axle 32. Bores 378 are included for this purpose.
- the axle bracket 374 also includes an air spring attachment portion 380, a shock absorber attachment portion 382 and a rack and pinion attachment portion 384, with appropriate bores permitting those components to be attached to the bracket.
- the axle bracket 374 further includes four bores 390-393 positioned along its vertically oriented arm attachment plane 394. Three bores 390-392 are slotted, while one bore 393 is round. The round bore 393 acts as a pivot or rotation point.
- the three slotted bores 390-392 permit fasteners to be positioned at a variety of positions along the slot. With this construction, the orientation between the axle bracket 374 and z-shaped arm can be adjusted, facilitating caster angle setting during assembly. This permits the assembly to be made without use of an assembly fixture.
- FIG. 11 illustrates another axle bracket 400.
- This axle bracket 400 is similar to the one illustrated in FIG. 10 , but it includes a transverse torque rod attachment 402 included within the axle bracket casting. This permits a transverse torque rod to be attached directly to the axle bracket 400 and results in a saving of weight, cost and component complexity.
- FIGS. 12-15 illustrate portions of the suspension system components illustrated in FIGS. 6 and 7 .
- Two shock attachment locations 242 are preferably used to permit a single axle bracket 238 to be used with vehicles having different desired specifications.
- Caster wedges 268 may be used, as shown. Slotted bores 290-292 may rotate about a round pivot bore 293 to permit the desired caster angle to be set.
- a rack and pinion fastener 294 may be used to retain the caster wedges 268.
- caster wedges 268 are retained above and below the bottom laterally extending surface 252 of the z-shaped arm 248 to permit the caster adjustment to be set and retained or locked at the desired setting. The orientation of the torque rod bracket 266 may then be varied, as desired.
- FIGS. 12-14 illustrate the through-bolt connection of the axle bracket 238 to fabricated vehicle axle 32.
- fabricated vehicle axle 32 includes the known bottom plate 404 having an inverted U-shaped member 406 welded thereto. Within the inverted U-shaped member 406, fabricated vehicle axle 32 includes sleeves 408 designed to accommodate the shafts of bolts 410 in a generally snug fitting relationship.
- each axle bracket 238 wraps around the inverted U-shaped member 406 of fabricated vehicle axle 32, it includes a wrap plate 412 on the distal side of the axle. Wrap plate 412 includes two bores 414, which are brought into registration with the sleeves 408 extending through the inverted U-shaped member 406 of fabricated vehicle axle 32.
- the bolts 410 are inserted through bores machined into the bearing surfaces formed on the proximal end of the axle wrap portion of axle bracket 238, through sleeves 408, and through the bores 414 within wrap plate 412.
- FIG. 16 illustrates a z-shaped arm construction 418 having rack and pinion attachments 420 included therein.
- a rack and pinion steering system 64 is attached to the z-shaped arm 418.
- the rack and pinion steering system 64 is attached by the use of fasteners securing the rack and pinion system to rack and pinion mounting holes incorporated into the arm 418.
- FIG. 17 illustrates a z-shaped arm 424 having a transverse torque rod bracket 426 welded thereto. This alternative means for attaching a torque rod bracket to the z-shaped arm may be used.
- FIG. 18 illustrates a z-shaped arm having a stamped configuration. This construction permits the z-shaped arm 428 to have a variety of profiles, permitting even further optimizations of the part design to accommodate packaging limitations. The shape of the stamped z-shaped arm 428 may be tailored precisely for the intended use.
- FIGS. 19 and 20 illustrate the z-shaped arm 428 having ski tip type weld contact surfaces 249 to permit the longitudinally extending portion of the z-shaped arm to have improved weld characteristics with the outer canister 256 for the bushing.
- a voided bushing 257 is shown with voids on the top and bottom to provide further control and tuning of roll stiffness.
- the fore-and-aft portion of the bushing 257 is not voided and is stiff to avoid potentially unfavorable behavior such as resonance in yaw.
- the roll stiffness for the suspension 230 is preferably within a range or "window.” It is preferably high enough for desirable vehicle handling, yet low enough not to cause vibration and torsional inputs to the chassis and not to cause undue load transfer and understeer.
- FIGS. 21 and 22 illustrate an alternative construction whereby separate brackets are used for the axle wrap and the rack and pinion steering system mounting.
- the axle wrap bracket is identified as reference numeral 430
- the rack and pinion mounting bracket is identified as reference numeral 432.
- Brackets 430, 432 are attached to the z-shaped arm by appropriate fasteners.
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Abstract
Claims (17)
- Ensemble d'essieu pour un véhicule, comprenant :un essieu de véhicule (32) s'étendant latéralement sur un axe central de véhicule, ledit essieu de véhicule (32) ayant une section creuse :un support d'essieu (38 ; 138 ; 238 ; 374 ; 400 ; 430) fixé à l'essieu de véhicule (32), ledit support d'essieu étant monté sur ledit essieu et s'enroulant autour d'au moins une partie de ladite section d'essieu, etun bras de suspension s'étendant de manière longitudinale (48 ; 148 ; 248 ; 418 ; 424 ; 428) fixé audit essieu par ledit support d'essieu ;
caractérisé en ce que :
ledit support d'essieu (38 ; 138 ; 238 ; 374 ; 400 ; 430) a une surface de montage de fixation de composant de suspension (46 ; 146 ; 246) positionnée au-dessus dudit essieu (32) et s'étendant dans un plan sensiblement perpendiculaire audit essieu (32) pour fournir une surface de montage de fixation de cisaillement, ledit bras de suspension a une surface de montage (54 ; 154 ; 254) à laquelle il est fixé le long de ladite surface de montage de fixation de cisaillement dudit support d'essieu. - Ensemble d'essieu selon la revendication 1, dans lequel l'essieu de véhicule (32) est un essieu de véhicule fabriqué ayant une section de caisson.
- Ensemble d'essieu selon la revendication 1 ou 2, dans lequel ledit support d'essieu est un moulage d'aluminium ou un moulage de fer.
- Ensemble d'essieu selon la revendication 1, 2 ou 3, dans lequel ledit support d'essieu (400) comprend une fixation de tige de couple transversale (402) comme faisant partie de ce dernier.
- Ensemble d'essieu selon l'une quelconque des revendications précédentes, dans lequel ledit support d'essieu (38 ; 138 ; 238 ; 374 ; 400 ; 430) comprend une fixation d'amortisseur (42 ; 142 ; 242 ; 382) comme faisant partie de ce dernier.
- Ensemble d'essieu selon l'une quelconque des revendications précédentes, dans lequel ledit support d'essieu (38 ; 138 ; 238 ; 374 ; 400 ; 430) comprend une fixation de ressort pneumatique (40 ; 140 ; 240 ; 380) comme faisant partie de ce dernier.
- Ensemble d'essieu selon l'une quelconque des revendications précédentes, dans lequel ledit support d'essieu (138 ; 238 ; 374 ; 400) comprend une fixation de mécanisme à crémaillère (143 ; 243 ; 384) comme faisant partie de ce dernier.
- Ensemble d'essieu selon l'une quelconque des revendications précédentes, dans lequel ledit support d'essieu (138 ; 238 ; 374 ; 400) comprend des trous de fixation de roulette fendues (290, 291, 292 ; 390 ; 391 ; 392) et un trou de pivot rond (293 ; 393).
- Système de suspension de véhicule pour la fixation à un essieu de véhicule s'étendant latéralement, comprenant :un bras de suspension s'étendant longitudinalement (48 ; 148 ; 248 ; 418 ; 424 ; 428) ayant une surface de montage (54 ; 154 ; 254) qui permet la fixation dudit bras de suspension à un support d'essieu le long d'une surface de montage de fixation de bras de suspension (46 ; 146 ; 246) dudit support d'essieu, etun support d'essieu (38 ; 138 ; 238 ; 374 ; 400 ; 430) adapté pour la fixation à l'essieu de véhicule, ledit support d'essieu ayant ladite surface de montage de fixation de bras de suspension (46 ; 146 ; 246) qui est positionnée au-dessus dudit essieu lorsque ledit support d'essieu est fixé audit essieu et s'étend dans un plan sensiblement perpendiculaire audit essieu pour fournir une surface de montage de fixation de cisaillement pour le bras de suspension fixé.
- Système de suspension de véhicule selon la revendication 9, qui est un système de suspension à bras principal ou bras oscillant.
- Système de suspension de véhicule selon la revendication 9 ou 10, dans lequel ledit bras de suspension a une section transversale en forme de Z.
- Système de suspension de véhicule selon la revendication 11, dans lequel ledit bras de suspension a une surface supérieure s'étendant latéralement (50 ; 150 ; 250), une surface inférieure s'étendant latéralement (52 ; 152 ; 252) et une surface s'étendant verticalement assemblant lesdites surfaces supérieure et inférieure et comprenant ladite surface de montage de bras de suspension (54 ; 154 ; 254) qui est fixée à la surface correspondante de ladite surface de montage (46 ; 146 ; 246) dudit support d'essieu.
- Système de suspension de véhicule selon l'une quelconque des revendications 9 à 12, dans lequel ledit bras de suspension est progressivement rétréci en largeur, dans la direction à distance du support d'essieu.
- Système de suspension de véhicule selon l'une quelconque des revendications 9 à 13, dans lequel ledit support d'essieu est selon l'une quelconque des revendications 3 à 8.
- Système de suspension de véhicule selon l'une quelconque des revendications 9 à 14, mais sans la caractéristique de la revendication 5, comprenant un support de tige de couple transversale (66 ; 266 ; 366 ; 426) fixé audit bras de suspension.
- Système de suspension de véhicule selon la revendication 9 ou 10, dans lequel ledit bras de suspension (418) comprend une fixation de mécanisme à crémaillère (420) comme faisant partie de ce dernier.
- Système de suspension de véhicule selon l'une quelconque des revendications 9 à 16, dans lequel ledit bras de suspension comprend une boîte externe de douille (56 ; 256) et une douille (257) insérée à l'intérieur de cette dernière, et dans lequel ladite douille est vidée dans deux directions pour contrôler la rigidité de la suspension.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/734,671 US7748726B2 (en) | 2007-04-12 | 2007-04-12 | Leading and trailing arm suspensions with z-shaped arms |
PCT/US2008/058357 WO2008127857A2 (fr) | 2007-04-12 | 2008-03-27 | Suspensions à bras principal et oscillant avec des bras en forme de z |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2137003A2 EP2137003A2 (fr) | 2009-12-30 |
EP2137003A4 EP2137003A4 (fr) | 2011-04-13 |
EP2137003B1 true EP2137003B1 (fr) | 2012-05-16 |
Family
ID=39853020
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08732894A Not-in-force EP2137003B1 (fr) | 2007-04-12 | 2008-03-27 | Suspensions à bras principal et oscillant avec des bras en forme de z |
Country Status (10)
Country | Link |
---|---|
US (1) | US7748726B2 (fr) |
EP (1) | EP2137003B1 (fr) |
JP (1) | JP2010523404A (fr) |
KR (1) | KR20100016375A (fr) |
CN (1) | CN101687454B (fr) |
AU (1) | AU2008239471C1 (fr) |
BR (1) | BRPI0811049A2 (fr) |
CA (1) | CA2683039C (fr) |
MX (1) | MX2009010486A (fr) |
WO (1) | WO2008127857A2 (fr) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
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US20060158023A1 (en) * | 2005-01-14 | 2006-07-20 | The Boler Company | Continuous radius axle and fabricated spindle assembly |
US20060244236A1 (en) | 2005-04-27 | 2006-11-02 | Cortez Jerome L | Vehicle suspensions having leaf springs and alternative clamp groups |
US8029008B2 (en) * | 2005-04-27 | 2011-10-04 | Hendrickson Usa, L.L.C. | Vehicle suspensions having leaf springs and alternative clamp groups |
US7690660B2 (en) * | 2007-03-29 | 2010-04-06 | Hendrickson Usa, L.L.C. | Leading and trailing arm suspensions having a fully integrated arm |
KR100941255B1 (ko) * | 2007-10-05 | 2010-02-11 | 현대자동차주식회사 | 소형 프레임 차량의 트레일링 암 마운팅 장치 |
DE102011086517A1 (de) * | 2011-11-17 | 2013-05-23 | Zf Friedrichshafen Ag | Starrachse mit Luftfederung |
US8820760B2 (en) * | 2011-12-28 | 2014-09-02 | Vdl Weweler B.V. | Wheel axle suspension |
US9085212B2 (en) * | 2013-03-15 | 2015-07-21 | Hendrickson Usa, L.L.C. | Vehicle suspension |
WO2014143869A1 (fr) * | 2013-03-15 | 2014-09-18 | Edison2 | Système de montage d'essieu et véhicule |
US9150071B2 (en) | 2013-07-25 | 2015-10-06 | Hendrickson Usa, L.L.C. | Frame hanger for vehicle suspension |
US9315083B2 (en) | 2014-07-15 | 2016-04-19 | Hendrickson Usa, L.L.C. | Frame hanger for providing thrust angle alignment in vehicle suspension |
US9840121B2 (en) * | 2014-10-23 | 2017-12-12 | Unverferth Manufacturing Company, Inc. | Suspension axle |
DE102015216207A1 (de) * | 2015-08-25 | 2017-03-02 | Ford Global Technologies, Llc | Querlenker für eine Radaufhängung eines lenkbaren Rades eines Kraftfahrzeugs |
DE102016007367A1 (de) * | 2016-06-16 | 2017-10-19 | Hochschule für Angewandte Wissenschaft und Kunst - Hildesheim/Holzminden/Göttingen | Starres Fahrwerk für Nutzfahrzeuge |
KR102530708B1 (ko) * | 2017-09-23 | 2023-05-11 | 헨드릭슨 유에스에이, 엘.엘.씨. | 제작된 차축 시트 조립체 |
USD871273S1 (en) * | 2017-12-04 | 2019-12-31 | Cruisemaster Australia Pty Ltd | Independent suspension arm for a vehicle having a diagonal reinforcing member |
JP7088298B2 (ja) * | 2018-10-02 | 2022-06-21 | 日本製鉄株式会社 | サポートビーム |
CN112140823B (zh) * | 2019-06-27 | 2024-09-20 | 上海申龙客车有限公司 | 一种三段式客车车架后桥下推力杆处传力结构 |
US12085204B2 (en) * | 2021-12-14 | 2024-09-10 | Firestone Industrial Products Company, Llc | Mounting bracket assemblies as well as suspension assemblies, kits and methods including same |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH092033A (ja) * | 1995-06-23 | 1997-01-07 | Suzuki Motor Corp | リ−ディングア−ム |
US6241266B1 (en) | 1995-08-03 | 2001-06-05 | Holland Neway International, Inc. | Trailing arm suspension with wrapper compression axle mounting and articulated axle mounting |
US6237304B1 (en) | 1997-07-18 | 2001-05-29 | Henkel Corporation | Laminate structural bulkhead |
US6032967A (en) * | 1998-02-18 | 2000-03-07 | Dana Canada, Inc. | Axle and suspension connection assembly and method |
BR9815925A (pt) | 1998-07-02 | 2001-02-20 | Boler Co | Sistema de suspensão/eixo de braço traseiro |
JP2000108632A (ja) * | 1998-09-30 | 2000-04-18 | Rhythm Corp | スタビライザコンロッド |
US6808192B1 (en) | 1999-11-24 | 2004-10-26 | The Holland Group, Inc. | Trailing arm suspension |
US6416136B1 (en) | 2000-02-23 | 2002-07-09 | Fred P. Smith | Lightweight, adjustable-height, axle |
US6616156B1 (en) * | 2000-04-27 | 2003-09-09 | The Boler Company | Steering knuckle |
MXPA05004216A (es) | 2002-10-30 | 2005-06-08 | Boler Co | Amortiguador de direccion y accesorio de viga de bloqueo de respaldo. |
AU2004274434B2 (en) | 2003-09-17 | 2008-06-26 | Hendrickson International Corporation | Rigid axle for a vehicle, comprising integrated trailing arms |
KR20050038139A (ko) * | 2003-10-21 | 2005-04-27 | 기아자동차주식회사 | 자동차의 로어암 부시 장치 |
US7445220B2 (en) | 2004-02-06 | 2008-11-04 | Daimler Trucks North America Llc | Vehicle axle apparatus |
US7360774B2 (en) | 2004-08-11 | 2008-04-22 | Arvinmeritor Technology, Llc | Cast trailing arm assembly for trailer suspension |
US20060244236A1 (en) * | 2005-04-27 | 2006-11-02 | Cortez Jerome L | Vehicle suspensions having leaf springs and alternative clamp groups |
US7516968B2 (en) | 2005-04-29 | 2009-04-14 | Hendrickson Usa, L.L.C. | Wishbone-shaped linkage component and suspension systems incorporating the same |
US7484745B2 (en) | 2006-03-07 | 2009-02-03 | Gm Global Technology Operations, Inc. | Brinelling bushing joint assembly |
US7360773B2 (en) * | 2006-07-21 | 2008-04-22 | Hendrickson Usa, L.L.C. | Self-steering axle suspension system having a rotary stabilizer |
US7618049B2 (en) | 2006-09-15 | 2009-11-17 | Arvinmeritor Technology, Llc | Trailing arm suspension |
US7690660B2 (en) * | 2007-03-29 | 2010-04-06 | Hendrickson Usa, L.L.C. | Leading and trailing arm suspensions having a fully integrated arm |
-
2007
- 2007-04-12 US US11/734,671 patent/US7748726B2/en active Active
-
2008
- 2008-03-27 EP EP08732894A patent/EP2137003B1/fr not_active Not-in-force
- 2008-03-27 CA CA2683039A patent/CA2683039C/fr not_active Expired - Fee Related
- 2008-03-27 WO PCT/US2008/058357 patent/WO2008127857A2/fr active Application Filing
- 2008-03-27 JP JP2010503117A patent/JP2010523404A/ja active Pending
- 2008-03-27 CN CN2008800117997A patent/CN101687454B/zh not_active Expired - Fee Related
- 2008-03-27 KR KR1020097023395A patent/KR20100016375A/ko not_active Application Discontinuation
- 2008-03-27 MX MX2009010486A patent/MX2009010486A/es active IP Right Grant
- 2008-03-27 AU AU2008239471A patent/AU2008239471C1/en not_active Ceased
- 2008-03-27 BR BRPI0811049-2A2A patent/BRPI0811049A2/pt not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
WO2008127857A3 (fr) | 2009-12-30 |
WO2008127857A2 (fr) | 2008-10-23 |
EP2137003A2 (fr) | 2009-12-30 |
EP2137003A4 (fr) | 2011-04-13 |
JP2010523404A (ja) | 2010-07-15 |
US7748726B2 (en) | 2010-07-06 |
US20080252031A1 (en) | 2008-10-16 |
KR20100016375A (ko) | 2010-02-12 |
MX2009010486A (es) | 2010-01-25 |
BRPI0811049A2 (pt) | 2015-01-27 |
CN101687454B (zh) | 2013-08-07 |
AU2008239471A1 (en) | 2008-10-23 |
AU2008239471C1 (en) | 2013-09-12 |
CN101687454A (zh) | 2010-03-31 |
CA2683039C (fr) | 2015-06-23 |
AU2008239471B2 (en) | 2013-06-06 |
CA2683039A1 (fr) | 2008-10-23 |
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